⭕️ A rare book with the Woolmark certification. This is a must-read bible for those involved in the clothing industry, with specialized information on the history of wool, biological explanations, and scientific descriptions of the fibers. It's a Showa-era book, so you'll find some outdated expressions, which is also part of its charm. The final section covers store display methods, which may differ from modern approaches, but it's valuable as a historical document.